"We cannot stand living in this unhealthy camp any longer," mother-of-three Hamidah told the agency.

Mr Clinton will also visit rows of bare temporary housing built as an emergency measure after the tsunami, but which charities estimate still house some 70,000 people, the BBC's Lucy Williamson reports from Jakarta.

Other stops will include a transitional housing project and a recently completed school.

He is also expected to hold meetings with representatives from the Indonesian government and the former separatist group, GAM, our correspondent adds.

The two sides signed a peace deal last year that was widely attributed to the impact of the tsunami.

On Friday, work began on placing the first of a planned network of tsunami early warning buoys in the Indian Ocean.

The buoy, to be placed between Thailand and Sri Lanka, is able to detect sudden increases in pressure deep under the sea and give coastal communities early warning of a tsunami.

It is hoped that eventually a network of 24 buoys will extend to Indonesia and Australia, along the deep and unstable fault-line that caused the 2004 earthquake.